A little over two years ago, DynDNS took the first steps toward discontinuing their Free DNS service, and now they have announced that it’s really coming to an end for most users. In the 2012 article linked above, the following alternatives were mentioned:
Those that have replaced their router’s firmware with DD-WRT have the option to use DynDNS.org, freedns.afraid.org, ZoneEdit.com, No-IP.com, 3322.org, easyDNS.com, TZO.com, and DynSIP.org (or you can use another “custom” service).
As time rolls on, the list of available free DNS services changes, but it seems like there are always plenty of choices. Since that 2012 announcement we’ve used the one at freedns.afraid.org and have been quite happy with it. But you want more choices, you say? Then check out this article:
Best Free Dynamic DNS Services (Updated 2014) (GNU Tomorrow)
Just remember that if you want to use a free DNS service, you need to sign up for one of those alternatives before the May 7 cutoff date, preferably long enough before that you have the time to update any configurations that specify the DynDNS address. Don’t put it off until you realize that your dynamic address will be no longer functional in just a few hours, or worse yet, has already ceased to function!
Dyn Decided To Stop Offering Free Accounts for Dynamic DNS (Dyn)
Dyn discontinues free DynDNS service to clean up its DDNS network (Ars Technica)
Beat it, freetards! Dyn to shut down no-cost dynamic DNS next month (The Register)